Preheat oven to 400 degrees F.,Combine cheese and crab in a small bowl.,Divide crab mixture among the upside-down mushroom caps, stuffing the mushrooms.,______,Cut phyllo lengthwise down the center and then cut each half into 3 pieces to make 6 rectangles.,Place a mushroom, cheese side up, in the center of each square.,Season with salt and pepper.,Lift sides of pastry over mushrooms to resemble small bundles and form a "neck," pinching edges together to seal.,Repeat the entire procedure 2 more times.,Place on a greased baking sheet and brush with beaten egg.,Bake for about 15 minutes until pastry is crisp and golden.,Serve hot.